Transaction in Own Shares

BP PLC
13 October 2005

BP p.l.c.  -  Transaction in Own Shares
BP p.l.c.  -  13 October 2005

BP p.l.c. announces that on 12 October 2005, it purchased 5,800,000 ordinary
shares at prices between 635.00 pence and 640.00 pence per share and between
1102.8 cents and 1125.5 cents per share. The purchased shares will all be held
as Treasury shares.

Following the above purchase, BP p.l.c. holds 699,638,481 ordinary shares in
Treasury, and has 20,936,774,509 ordinary shares in issue (excluding Treasury
shares).

Enquiries: Fergus MacLeod, BP p.l.c.    Tel : [phone]


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